Coleopterological Notices, VI. 145 



convex, at scarcely more than their own length from the base; tenipora very 

 prominent, ronnded; base transverse, the subvertical basal wall feebly im- 

 pressed toward the middle: antennse nearly as long as the head and prothorax, 

 moderately incrassate. Prothorax transversely trapezoidal, at least one-third, 

 wider than the head; sides convergent and arcuate from near the apex to the 

 basal margin; apex transverse, feebly arcuate, nearly one-half wider than the 

 base; surface closely- covered with small punctures and tubercles, the median 

 line impressed toward apex. Elytra elongate-oval, two-thirds longer than, 

 wide, two-fifths wider than the prothorax; sides evenly arcuate ; base broadlj^ 

 sinuate, the aj)ex equally broadly subtruncate; humeri narrowly exposed at 

 base; disk evenly convex, finely, not very closely punctate, without further 

 modification, except the subsutural impressions at apical third which are fee- 

 ble. Abdomen dull, densely reticulate, finely punctate, rather sparsely and 

 coarseh' pubescent. Legs somewhat long and not noticeablj' stout. Length 

 2.6-2.8 mm. ; width 1.0 mm. 



California ( southern ). Mr. H. C. Fall. 



The apical declivous surface of the pronotum is distinctly and 

 transversely concave, but its upper crest is not more strongl}' 

 tuberculose. The male has the anterior tibiae bent, the fifth ven- 

 tral feebly sinuato-truncate at apex but otherwise unmodified, the 

 genital segment moderate in size, pale, truncate, and transversely 

 and unequally impressed, the copulatory spicule with the tip ab- 

 ruptly' narrowed and produced in a short slender acute jioint, 

 which is subcylindrical and not noticeably' compressed. 



With the two males which I received from Mr. Fall, I have as- 

 sociated a single male from Alameda Co., which does not seem to 

 diflfer specifically. 



4. A. gracileiitlis n. sp.— Rather narrow but strongly convex, some- 

 what shining, pale rufo-testaceous, except the abdomen and elytra, which are 

 slaty -black ; pubescence recumbent, coarse and dense as usual. Head triangu- 

 lar, rather longer than wide, feebly convex, coarsely and not densely tubercu- 

 lose, with some intermingled and very minute punctures, the smooth median 

 line entire, very wide anteriorly ; eyes rather large, moderately prominent, 

 situated at scarcely three-fourths of their length from the base ; tempora ob- 

 tusely angulate, but only slightly more prominent than the eyes ; base trans- 

 versely truncate, feebly concave toward the middle of the basal wall; antennte 

 somewhat slender, feebly incrassate, two-thirds longer than the head. Pro- 

 tJwrax rather small, moderately convex, only slightly wider than long, dis- 

 tinctly wider than the head, the sides convergent and strongly arcuate from 

 near the apex to the basal margin, thence parallel for a short distance to the 

 base; apex transversely arcuate; disk strongly tuberculose and with fine punc- 

 tures, the median line feebl}' impressed, more strongly so toward apex, the 

 apical declivity pronounced and with the tubercles along its crest slightly 

 stronger. Elytra suboval, evenly convex, scarcely more than one-half longer 



